Single housing bracket is a "U" shaped mounting bracket for 3/4" inlet/outlet standard whole house housings. The UB-1 mounts standard whole house water filter housings and helps support the weight of the water filter. Screws are included with the UB-1 mounting bracket for securing the water filter housing to the wall. Use with: Culligan HF-150 (883.4442) and Culligan HF-360 (306.9820) Water Filter Housings.